Home / 7,129.04-10,689.95-3,379.68

Finding the Fourth Proportional to 7,129.04, 10,689.95 and 3,379.68

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Solution

The fourth proportional to 7,129.04, 10,689.95 and 3,379.68 is: 5,067.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,129.04 : 10,689.95 = 3,379.68 : x
  2. Step 2: Convert to fraction form
    7,129.04/10,689.95 = 3,379.68/x
  3. Step 3: Cross multiply
    7,129.04x = 10,689.95 × 3,379.68
  4. Step 4: Simplify right side
    7,129.04x = 36,128,620.04
  5. Step 5: Solve for x
    x = 36,128,620.04/7,129.04
  6. Step 6: Final answer
    x = 5,067.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.